Whether frequent cold baths are beneficial or not depends on the target group, if the physical condition is good and there is no discomfort after taking a cold bath, you can try to take a cold bath; while the weak, the elderly, infants and young children, women who are in their menstrual period, and those who are pregnant or breastfeeding should avoid taking a cold bath. People with good physique can try cold water bathing in summer when the environment is suitable, because cold water will stimulate the human skin, promote blood circulation and enhance the body’s ability to withstand cold. For people with poor physique, they should not take a cold water bath, it is easy to lose too much heat, leading to the occurrence of cold. At the same time for long-term exercise sweating crowd should not long-term cold water bath, easy to induce sudden contraction of blood vessels, leading to abnormal contraction of blood vessels in the cranial cavity, triggering dizziness, headache may be. For special people, such as infants, the elderly, women in menstruation and pregnancy or lactation of the crowd need to avoid cold water bath, too cold stimulation will induce varying degrees of cold, increase the chances of bacterial and viral infections. For people with high blood pressure, prolonged cold bathing is more likely to induce the risk of stroke.